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The list of national projects SAS

Astronomical Institute
Dynamics of the meteoroid streams of selected comets and other small objects in the Solar System
Dynamika prúdov meteoroidov vybraných komét a ďalších malých telies v Slnečnej sústave
Program: VEGA
Project leader: RNDr. Neslušan Luboš CSc.
Annotation:The meteoroid streams created by at least 8 comets, which have not yet been considered as parent bodies, will be studied within the framework of the project. This enables not only new meteor showers to be predicted, but, by comparing models with the real meteors from databases, also the origin of several existing showers to be identified. A new method, based on standard mathematics, of the separation of all showers from a given meteor database will be developed. We will study an influence of secular resonances on the formation of the „kernel“ of Edgeworth-Kuiper belt. We will determine the typical timescales of various phases in the dynamical evolution of Centaurs and efficiency of their capturing by giant planets.
Duration: 1.1.2018 - 31.12.2021
Evolution, physical characteristics and interrelationships between populations of interplanetary matter
Evolúcia, fyzikálne charakteristiky a vzájomné vzťahy populácií medziplanetárnej hmoty
Program: VEGA
Project leader: doc. RNDr. Svoreň Ján DrSc.
Annotation:The project is intended to the study of structures in meteoroid streams and search of small streams and associations. Double-station observation with video cameras enable us to study an overlap the structures found in meteoroid streams in photographic sizes into the interval of TV meteors. We will obtain precise atmospheric orbits from Slovak stations of the European fireball network. Physical characteristics of the parent bodies will be obtained by photometry and spectroscopy at the Skalnate Pleso Observatory. Analysis of light curves and spectra allow us to understand better the physical properties of bodies which can become potentially dangerous for the Earth. Our own observations in combination with observations with large telescopes will allow us to examine the activity of comets at large heliocentric distances. We shall simulate in the laboratory the observed properties of the surfaces of comets and asteroids, which is necessary for the correct interpretation of the observed spectral characteristics.
Duration: 1.1.2018 - 31.12.2021
Physical and dynamical characteristocs of meteoroids
Fyzikálne vlastnosti a dynamika meteoroidov
Program: SRDA
Project leader: RNDr. Hajduková Mária PhD.
Annotation:The aim of the project is to research the physical and dynamical properties of meteoroid particles and to obtain new data using our own camera system AMOS. We want to determine the proportion of cometary and asteroidal meteoroids in the actual influx of interplanetary matter in the Earth’s atmosphere, investigate the material heterogeneity in meteor showers and its changes during the evolution of the Solar system. For these purposes, we are going to complete the establishment of the AMOS cameras for observations from both North and South hemispheres, with data connection to the central server of the Faculty of Mathematics, Physics and Informatics of the Comenius University. This will provide the brand new, actual and original information for the basic research and its applications for the Earth-orbiting satellite operators. The new area of research with respect to our previous projects is spectral observations of meteors, with the resulting physical characteristics of the meteors, will help to distinguish their origin. Meteorite analyses will offer us more details about the pre-atmospheric meteoroid size and cosmic radiation history of the body. Consequent analysis based on numerical modeling will lead to an explanation of the dynamical mechanisms of their evolution in the Solar system. The obtained data, as well as already existing data, will be used to find new meteor showers, particularly those with radiants on the Southern sky. The structure of well-known showers will be studied in more detail. A search for a relationship between some showers and their parent bodies will be done. Knowledge of this relationship will, in the future, enable us to predict the approaches of meteoroid streams to the Earth’s orbit, which can threaten artificial satellites as well as inhabited space stations.
Duration: 1.7.2017 - 30.6.2021
Investigation of the dynamic and magnetic properties of the structures in the solar atmosphere based on spectroscopic and spectro-polarimetric methods.
Štúdium dynamiky a magnetických vlastností štruktúr v slnečnej atmosfére spektroskopickými a spektro-polarimetrickými metódami.
Program: VEGA
Project leader: Mgr. Gömöry Peter PhD.
Annotation:The solar atmosphere is a dynamic object consisting of many interacting structures which are highly variable in time and dominantly controlled by the magnetic field. The magnetic field drives not only the mentioned events but it also affects physical conditions in the heliosphere, controls space weather, and thus directly affects the Earth's biosphere. Therefore, the main goal of this project is to study physical properties of the solar magnetic phenomena. For this purpose, the data acquired by large ground-based telescopes (e.g., GREGOR, SST, GST, DKIST) and by space-born instruments (e.g., IRIS, SDO, PSP) will be used. In addition, data acquisition performed using unique infrastructure at Lomnicky Peak Observatory (CoMP-S, SCD) is planned. Principally new findings will be acquired by analysing the highest quality experimental data, using specialized routines for numerical modelling and inversion codes developed to determine the components of magnetic vector fields related to the phenomena under study.
Duration: 1.1.2020 - 31.12.2023
The relationship between color and polarization in comets: clues to understanding microphysical properties of cometary dust and mechanisms of its ejection
Vzťah medzi farbou a polarizáciou v kométach: kľúče k pochopeniu mikrofyzikálnych vlastností kometárneho prachu a mechanizmov jeho úniku
Program: SRDA
Project leader: Mgr. Ivanova Oleksandra PhD.
Annotation:The aim of the project focuses on the research of physical properties of dust particles in cometary atmospheres. For the first time, the systematic study of rapid changes in a color index and a degree of linear polarization of 10 comets (in minimum) will be performed, and this allow us to estimate the frequency of such phenomena in comets. The vast majority of comets were observed in a limited number of periods and/or with a long time intervals among them. However, taking into account the recent finding of rapid variations in cometary dust properties from the scattering of sunlight, it is a lack of agreement with observational results. Our research carried out within this project should help to resolve this very important issue. Characteristics of comets obtained from our observations, as well as already archived data, will be analyzed for the rate of change in a color index and/or in a degree of linear polarization in comet's coma and tail. This should allow us to find a correlation among observed color changes and polarization and the microphysical characteristics of cometary dust. In addition, a possible correlation of rapid color variations and polarization with other cometary characteristics such as their orbital motion, chemical composition of ice, thermal emissions, etc. will be examined. This analysis will improve our understanding of mechanisms that causes a rapid changes in comets and thus qualitatively improve our knowledge of short-term processes in cometary evolution.
Duration: 1.7.2020 - 30.6.2024
Eclipses: basic tool to study exoplanets, binaries and multiple stellar systems
Zákryty: základný nástroj pre štúdium exoplanét, dvojhviezd a viacnásobných sústav
Program: VEGA
Project leader: RNDr. Budaj Ján CSc.
Annotation:Extrasolar planets (exoplanets) are modern and dynamical field of research. It complements and builds upon a research on interacting binaries and both fields use the same methods, tools, and often also the same infrastructure. Our goal is to search for new exoplanets, to unravel the the nature, origin, and properties of recently discovered extrasolar asteroids (exoasteroids) and comets (exocomets) on close orbits around their parent stars. At the same time, we aim at a precise determination of parameters of selected binary stars and revealing the way they interact. We will also focus on young stars and T Tau binaries. The project is related to the international observational campaigns YETI and Dwarf.
Duration: 1.1.2018 - 31.12.2021
Generalized Incidence Geometries in Quantum Information and Astrophysics
Zovšeobecnené incidenčné geometrie v kvantovej informácii a astrofyzike
Program: VEGA
Project leader: RNDr. Saniga Metod DrSc.
Annotation:The project is aimed at getting further substantial insights into the role of (mostly finite) incidence geometries in the field of quantum information and astrophysics. We shall deal, consecutively, with: projective ring lines endowed with non-unimodular parts and quantum entanglement/non-locality; parapolar spaces of symplectic rank at least three and associated observable-based proofs of quantum contextuality; exceptional Moufang polygons and metasymplectic spaces of type F_4 to shed further light on the peculiar role of the smallest Galois field in quantum information; Veldkamp spaces exhibiting both not-connected complements of certain geometric hyperplanes and at least two distinct types of ovoids, which will be relevant for the black-hole/qubit correspondence and quantum coding; and, finally, with incidence geometries endowed with repeated lines, to account for finer traits of geometrical distinction between negative and positive quantum contexts.
Duration: 1.1.2020 - 31.12.2023

The total number of projects: 7